Machine freezes when configuring dual display on Ubuntu 9.10 (karmic)

Posted by sa125 on Super User See other posts from Super User or by sa125
Published on 2010-01-28T08:37:19Z Indexed on 2010/04/12 10:03 UTC
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ubuntu

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ubuntu-9.10

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dual-monitors

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freeze

Hi -

I'm trying to configure dual displays on an Ubuntu 9.10 machine. When I connect the 2 screens (1 VGA input, the other DVI), I see them in a mirrored display. I opened up Display Settings and unchecked the 'mirror screens' box, and when I clicked apply, the machine froze and I had to force restart it. This happened repeatedly for about 6 times until I gave up. How do I set it up to boot up normally with dual display working? thanks.

edit: I thought it might be related to the virtual screen size, so I tried to edit /etc/X11/xorg.conf to add:

SubSection "Display"
    Virtual 2560 1024
EndSubSection

But that didn't do much. Each screen works fine on it's own, and together with mirrored display.

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